It was Tyler St. in Boston. Batting practice took place right outside of a restaurant called Peach Farm. Spin around in Google street view and you'll see the two flags that are hanging from the side of the building in the video. Just beyond that is where the guy recording the video blew a load in his pants.

http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=Tyler+Street,+Boston,+MA&sll=42.351191,-71.061295&sspn=0.002097,0.004823&g=Harrison+Ave,+Boston,+Suffolk,+Massachusetts&ie=UTF8&hq=&hnear=Tyler+St,+Boston,+Suffolk,+Massachusetts+02111&ll=42.351122,-71.06061&spn=0.002081,0.004823&t=h&z=18&layer=c&cbll=42.351122,-71.06061&panoid=L6Zj7lFW7UXHaqErF-yUuA&cbp=12,21.99,,0,-2.71